The TRX-20 Telephone Record Unit adapts a dictating machine or tape recorder to both single or multi-line telephones. It is compatible with all modular type telephones. Installed is easy and can be completed in a matter of minutes by merely "plugging" in the unit. The TRX-20 clearly records both ends of the phone conversation on any mini, micro or "C" cassette recorder. IDEAL FOR RECORDING: Important Business Calls Price Quotations Engineering Specifications Conference Calls Dictation to Your Secretary while Traveling Long Distance Calls - Domestic or International Medical Discussions Stock Quotations Legal Matters Insurance Claims